الفهرس 
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Abstract
Nowadays world is suffer from the environmental pollution from
several sources. One of the most serious pollution sources is that
coming from the petroleum industry such as pollution of sea water by
petroleum oil, air pollution, and soil pollution.
Egyptian Petroleum companies facing some difficulties in disposal
of the residual heavy crude oil (Heavy Naphtha) that found in the
refinery stage, these residuals has a serious impact on the
environment if it treated in a wrong way.
This master aims to protection of the ecosystem from petroleum
contamination resulting from the residual crude oil (Heavy Naphtha)
in the refinery stage. This can be carried out by conversion of oil
residue into its light components.
Heavy Naphtha plays an important role in our lives. Most
transportation vehicles are powered by refined products such as
gasoline and fuel oil as the same as cause contamination resulting
from the residual heavy naphtha in the refinery stage.
The study solve the environmental problem of the presence of heavy
naphtha by using catalyst such as mica in chemical catalytic cracking
process which is one of the safest ways to overcome this problem
producing light component which is economic source for fuel and
prevent it’s negative impact on the environment by protection of the
ecosystem from heavy naphtha contamination resulting from the
residual heavy naphtha in the refinery stage. In additions, using the
commercial mica has been used as support of catalyst which
considerable lower cost and more available by comparison another
catalyst. The fresh mica was oxidized using concentrated nitric acid.
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Catalyst preparation from the produced mica materials as oxidized
mica (NM) and sulfonated oxidized mica (MNSO3H).
Physicochemical characterizations for the obtained mica materials
and catalysts as BET, XRD, FTIR, TGA, SEM and TPD analysis.
Propping efficiency of mica and catalyst (MNSO3H) towards
cracking of heavy naphtha